Sensitivity optimization of a photonic crystal ring resonator for gas sensing applications
Sprache des Titels:
In this work we report on a computational study regarding the enhancement of the absorption of mid
infrared (MIR) light for gas sensing applications. In order to address this goal, a photonic crystal ring
resonator (PCRR) with a quality factor of more than 3.85 × 105 was designed. The considered PCRR is
based on 2D pillar type photonic crystals, which consist of a hexagonal array of silicon rods. The high
quality factor of the cavity, along with strong overlap between the field of the resonant mode and the
analyte (0.76) and low group velocity of PCRR modes consequence into enhance sensitivity for gas sensing.